INDEX. 



365 



II 



Habits, changes of, 143 

 Haeckel, Ernest, on evolution, 87, 190 

 Health, definition of, 291 

 Healthy- and disease-tendency in pa- 

 rents, 327 

 Heiresses tend to have few children, 



275 

 Hereditary product, absolutely neces- 

 sary assumption of the theoretical 

 existence of a, 140 

 Heredity and the causation of disease, 

 321 

 apparent exceptions to principle 



of, 328 

 at corresponding ages, 57, 183 

 at corresponding seasons, 58 

 immediate cause of, 1 80 

 influence of, on morals, 318 

 Mr. Drummond on, 319 

 influence of E disturbs, 127 

 reversion, 104 

 sexual, 59, 73 

 what it is, 40 

 Hereditary taint, Dr. Eeynolds on, 172 

 Hip-joint disease due to errors in diet, 



267 

 Hooker, Dr., 345 



Humoural and spiritual pathology, 332 

 Huth, on intermarriage of near kin, 83 

 Hutchinson, on the pre-cancerous stage, 



346 n 

 Huxley on " life," 14 



pathology, a branch of biology, 343 

 Hygiene, aim of, 235 

 Hypertrophy and degeneration, pro- 

 cesses of, 19 



Impossibility of localizing a trouble, 



Imprudence a mental defect, 198 

 Indirect equilibration, 188 

 Infanticide and savage races, 254 

 Infants, "civilized," cruelty practised 



on, 149 

 Inheritance, 145 

 Insanitation and death, 207, 212, 240 



Insanity, 165 



and marriage, 120, 216 

 Instinct, and reason, 192 



a safer guide than reason, 197 

 Instincts, importance of observing a 

 child's, 99 



variations in, 194 

 Intemperance a fruitful cause of in- 

 sanity, 278 

 Interaction, morbid, of structure and 



environment, 156, 157 

 Inter-crossing and inter-breeding, 42 



Darwin on, 42, 43 



Spencer on, 43 

 Intermarriage, 83 



of disease, 83 

 Internal-cell-E, 18, 176 



Jews and large towns, 244 



Knox, Dr., and'the races of man, 248 



Latent male sexual characters in -the 



female, 61 

 Law of battle, Darwin on, 188 

 Laycock on the menstrual change, 



Lee, Dr. E., on maternal impressions 



131 



Levelling-down process, a, 259 

 Life, a simple rhythm, 48 



Beale on, 14 n 



conditions of, 143 



definition of, 14 



Duke of Argyll on, 15 n 



Huxley on, 14 n 



Quatrefages on, 15 n 

 Lincoln, Abraham, 320 

 Lockyer, hypothesis of, 8 n. 

 London, absence of ozone in, 242 

 Londoners, degeneration amongst, 243 



and outdoor life, 244 

 Lucas, Dr. Prosper, on heredity, 136 



